Global patent index - EP 0985952 A1

EP 0985952 A1 2000-03-15 - IMAGE DISPLAY AND LIGHT-EMITTING DEVICE

Title (en)

IMAGE DISPLAY AND LIGHT-EMITTING DEVICE

Title (de)

BILDANZEIGE UND LICHTEMITTIERENDE VORRICHTUNG

Title (fr)

AFFICHEUR D'IMAGES ET DISPOSITIF EMETTANT DE LA LUMIERE

Publication

EP 0985952 A1 (EN)

Application

EP 99909298 A

Priority

  • JP 9901439 W
  • JP 7879998 A

Abstract (en)

A liquid crystal projector is composed of a luminous device 50, a parallel-conversion optical system 60, an optical switch 70, and a display optical system 80, in order to obtain a simple optical system and a high light-utilization rate of the liquid crystal projector. The luminous device 50 applies LD arrays 51, 52 and 53 composed of semiconductor lasers 54 arrayed lengthwise and crosswise. Output beams from the semiconductor lasers 54 are converted into parallel beams through lens arrays 61, 62 and 63. Since the output beams from the semiconductor lasers 54 are linearly polarized beams of wave P or wave S, the polarization conversion optical system is unnecessary. By optionally combining the semiconductor lasers 54, it is possible to make the shape of the LD array 51, 52 or 53 be the same as the light-utilization shape of red-transmission type liquid crystal panel 71, green-transmission type liquid crystal panel 72, or blue-transmission type liquid crystal panel 73. <IMAGE>

IPC 1-7 (main, further and additional classification)

G02F 1/1335; H04N 9/31

IPC 8 full level (invention and additional information)

G02B 3/00 (2006.01); G02B 27/14 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); H01S 3/00 (2006.01); H01S 5/00 (2006.01); H04N 9/31 (2006.01); H01S 5/40 (2006.01)

CPC (invention and additional information)

G02B 3/04 (2013.01); G02B 3/0056 (2013.01); G02B 3/0062 (2013.01); G02B 19/0028 (2013.01); G02B 19/0057 (2013.01); G02B 19/009 (2013.01); G02B 27/0927 (2013.01); G02B 27/0961 (2013.01); G02B 27/123 (2013.01); G02B 27/145 (2013.01); G02B 27/149 (2013.01); G02F 1/133526 (2013.01); G02F 1/13362 (2013.01); H01S 3/005 (2013.01); H01S 5/00 (2013.01); H04N 9/3105 (2013.01); H04N 9/3152 (2013.01); H01S 5/4025 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 0985952 A1 20000315; EP 0985952 A4 20040714; WO 9949358 A1 19990930

INPADOC legal status

2005-04-20 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040818

2004-07-14 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20040602

2004-03-10 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- IPC: 7G 02F 1/1335 A

2004-03-10 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- IPC: 7H 04N 9/31 B

2000-06-21 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: NAGAI, HARUHIKO

2000-06-21 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: KAMIZAWA, SADAOMI

2000-06-21 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: NISHINO, KO

2000-06-07 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: NAGAI, HARUHIKO

2000-06-07 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: KAMIZAWA, SADAOMI

2000-06-07 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: NISHINO, KO

2000-03-15 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991123

2000-03-15 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB